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DBpedia Overview - Sebastian Hellmannhttp://dbpedia.org

Overview● DBpedia is … ● DBpedia Association

○ Organisational Structure ○ Technical Issues○ Funding + Goals

DBpedia is ...

DBpedia is a crowd-sourced community effort to extract structured information from Wikipedia and Wikidata

The DBpedia Community enriches the extracted information with additional taxonomies

Links: inbound / outbound / text

Data submission by DBpedians

http://downloads.dbpedia.org/2015-10/

DBpedia is … a fused, multi-domain, multilingual dataset

Ontology

DBpedia is … vital

DBpedia is … a public service and infrastructure Main SPARQL Endpoint for querying with 99.3% uptime

source: http://sparqles.ai.wu.ac.at/endpoint?uri=http%3A%2F%2Fdbpedia.org%2Fsparql

Over 20 Language Chapter that volunteered to do

● local extraction and merging● community building and linking● hosting of local DBpedias and Spotlight

http://nl.dbpedia.org

http://nl.dbpedia.org/resource/Den_Haag

DBpedia Association● Organisational Structure ● Technical Issues● Funding + Goals

DBpedia Association (non-profit)● founded in 2014● operational since January 2016

Furthermore:

● Markus Freudenberg, Robert Roessling, Jan Forberg● Backed by AKSW research group and InfAI (over 50 dead-beat Linked Data

experts)

DBpedia Association (non-profit)

DBpedia Charter● Public draft online: http://wiki.dbpedia.org/dbpedia-association

All data published by the DBpedia Association should be made available free of charge under a license equivalent to CC-0 or CC-BY without further restriction on commercial use and redistribution.

DBpedia GroupsOntology Working Group

Communications Group - Facebook, Slack Discussion about communication channels

Internationalisation Group

DataID

(planned) Wikidata Group, Law?

- Ideas for groups? Association will help set up the group

DBpedia Association● Organisational Structure ● Technical Issues● Funding + Goals

Backlinking https://github.com/dbpedia/links

- DBpedians can push their links to be loaded into the main endpoint- (not yet published) Maven/Ant build system that updates, validates and

packages links

Please wait for the announcement and send a GitHub pull request

(Members can get help from the association for linking and submitting)

Wikidata - Great source for DBpedia- Mission is different from DBpedia (Collect core facts)- Limited to notability

Integration, EnrichmentQuality ControlIncreased Usefulness

Integration of sources Two ways:

1. fully automateda. automatic conversionb. automatic error detection

2. highly-assisted workflows a. semi-automatic suggestionsb. test-driven error detection of data errorsc. power toolsd. push to source

Mappings automation, validation & provenance

DBpedia Association● Organisational Structure ● Technical Issues● Funding + Goals

DBpedia is ...

99.3 % uptime

25 TB downloadable data

one DBpedia Ontology

decent linkage

decent data quality

Identifiers based onWikipedia/Wikidata

DBpedia Spotlight

DBpedia is … a very ambitious project⇒ 99.99% uptime for all languages and chapters and spotlight, scalable hosting via the cloud

⇒ 500 TB

⇒ many consistent domain sub-ontologies for each domain from cars to gas turbines to amoeba to star systems to literature

⇒ highly inter- and backlinked, DBpedia can serve as an entry point to find exactly the data (or knowledge) you need

⇒ improved testing and quality control

⇒ Identifiers based on all existing authoritative and robust identifier providers… starting with company data

⇒ all languages, all domains, improved scalability

Funding● current liquidity is around 10,000€● some pre-financing via H2020 and German national funding

Services are stable, but lot’s of “what if’s”

● what if OpenLink stops hosting the main endpoint● what opportunities do we miss without a properly oiled flagship

We need organisations to join and provide financial support, links and backlinks and data.

FundingBecome a member, if …

● you profit from DBpedia in any way● you wish to get more in touch with DBpedia● the services mentioned on the flyer seem useful for your organisation

Include DBpedia in your proposals:

● deliverables● subcontracting● consortium member (either association or the national chapters)

Future EventsSEMANTiCS 2016 - The Linked Data Conference

Submission open: Industry talks / scientific paper

Sep 12-15 in Leipzig - http://semantics.cc

● Huge DBpedia meeting on 15th of September

Hope to see you in Leipzig

More information: http://dbpedia.orgSign up: http://dbpedia.org/membership